School of Information and Electric Engineering, China University of Mining and Technology Wangzhuang Mine,
Shanxi Lu'an Environmental Energy Development Corporation Limited

According to a safety hidden danger occurred when operation personnel no intention closed to the roadheader as a roadheader was in operation, even a personal safety accident occurred, a study on a danger area warning system of the roadheader was conducted. Based on an electromagnetic field theory as a base, a I ow frequency electromagnetic wave was applied to the medium of a distance measuring and a detection of electromagnetic wave strength and the three side positioning algorithm were applied to determine a location of the operation personnel in the underground mine and to judge the personnel in or not in the danger area. The STM32F 103 embedded ARM was selected as a contral chip. The system was composited with a centralized data processing device on the roadheader and the portable mobile monitoring and measuring device with the operation person. With a simulation experiment measurement of the prototype, in a personnel positioning judgement within 0. 5~ 4.0 m, an average error was 4. 3% and a danger area positioning and warning could be realized.

国家高技术研究发展计划(863计划)资助项目(2012AA062104)；国家级大学生创新训练计划资助项目(201310290021)；